31
2x
6.
6. Type AWT-AC 221.A04
:
■ Slide the supplied union nuts
(
⁷
⁄
₁₆
UNF for liquid line, ¾ UNF for
hot gas line) over the refrigerant
lines from the external unit.
■ Flare the refrigerant lines from the
external unit.
■
Connect the supplied reducers
with copper sealing ring to the
connection pieces (twin connec-
tors).
■ Secure the refrigerant lines from
the external unit onto the reducers,
using the union nuts.
Type AWT-AC 221.A07 to A13,
B10, B13
:
■ Slide the supplied union nuts
(⅝ UNF for liquid line, ⅞ UNF for
hot gas line) over the refrigerant
lines from the external unit.
■ Flare the refrigerant lines from the
external unit.
■ Secure the refrigerant lines from
the external unit onto the connec-
tion pieces, using the union nuts.
Tighten nuts with the following torque:
Type AWT-AC Line
Connection
to internal
unit
Torque in Nm
221.A04
Liquid line
7
6 mm
⅝ UNF
with reducer
⅝ x
⁷
⁄
₁₆
14–18
Hot gas line
7
12 mm
⅞ UNF
with reducer
⅞ x ¾
50–62
221.A07
Liquid line
7
10 mm
⅝ UNF
33–42
Hot gas line
7
16 mm
⅞ UNF
63–77
221.A10
Liquid line
7
10 mm
⅝ UNF
33–42
Hot gas line
7
16 mm
⅞ UNF
63–77
Installation sequence
Connecting refrigerant lines
(cont.)
5782 201 GB
Installation
